. >> tonight, new evidence that one of president obama's central promises -- another one -- may be in trouble. remember this one? >> if you like your doctor, you will be able to keep your doctor, period. if you like your doctor or health care provider, you can keep them. if you've got health insurance, you like your doctor, you like your plan, you can keep your doctor, you can keep your plan. nobody is talking about taking that away from you. [ applause ] >> well, no one was talking about taking it away from you, but it may be happening. on capitol hill, several health care experts testified about a host of challenges, including one doctor who spoke about the shrinking list of medical options available through some of the health care exchanges. listen to this. >> i don't think the full scope of how restrictive the networks have become is fully appreciated. we found a plan in florida with seven pediatricians to service an area with with 270,000 children. in san bernardino county there was a plan where the nearest neurologist was 80 miles away. >> i spent over 20 years taking care of pa